1,2,4-Trichlorobenzene
Dona Ana MDWCA
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 6 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-29 | 1408061-001A | ND |
| 2014-07-29 | 1408060-001A | ND |
| 2014-07-29 | 1408063-001A | ND |
| 2014-07-29 | 1408057-001A | ND |
| 2014-07-29 | 1408062-001A | ND |
| 2014-09-03 | 1409282-001A | ND |
| 2017-01-11 | 1701548-001 | ND |
| 2017-01-11 | 1701554-001 | ND |
| 2017-01-11 | 1701555-001 | ND |
| 2017-01-11 | 1701556-001 | ND |
| 2018-01-09 | 1801603-001 | ND |
| 2018-01-09 | 1801604-001 | ND |
| 2018-01-16 | 1801921-001 | ND |
| 2019-07-09 | 1907439-001 | ND |
| 2019-10-21 | 1910C28-001 | ND |